<tt id="6hsgl"><pre id="6hsgl"><pre id="6hsgl"></pre></pre></tt>
          <nav id="6hsgl"><th id="6hsgl"></th></nav>
          国产免费网站看v片元遮挡,一亚洲一区二区中文字幕,波多野结衣一区二区免费视频,天天色综网,久久综合给合久久狠狠狠,男人的天堂av一二三区,午夜福利看片在线观看,亚洲中文字幕在线无码一区二区
             

          Sports/Olympics / 2008 Beijing Olympics

          Polluting factories wiped out
          By Cruz Fang (Chinadaily.com.cn)
          Updated: 2006-07-27 14:11

          Lifelong ties to the environment

          For hundreds of years, coal was the primary fuel used for cooking and heating in Beijing. Yellowish-gray smoke enveloped the city around mealtimes. When the Beijing Coking-Chemistry Plant was established in 1959, it was given an historical mission to help people switch from burning lumps of coal to using gas to cook their food and heat their homes.

          The dominance of coal and gas energy culminated in 1980s and 90's, after the number of private users in Beijing fanned out in the 1970s. When the plant was established, it only provided gas to some places where the central government was located. The number of private gas consumers increased significantly in the 1970s, and peaked in the 1990s.

          At that time, the factory had nearly 10,000 employees working to provide a stable gas supply to city residents and big plants. A small urban railway station was used to transport about 200 daily loads of coal and coke for the factory.

          When natural gas was discovered to be a cleaner fuel with rich reserves in North China, coal gas was doomed to fade out.

          The natural gas pipeline was first connected to Beijing in 1985, but small-scale natural gas use didn't immediately shake the major role coal gas played in the city.

          It wasn't until October of 1997, when natural gas, pumped 860 kilometers away from huge reserves in northern Shaanxi Province finally reached Beijing, that mass commercial supply became possible.

          The city's coal gas supply system was gradually replaced, and people became less tolerant of the pollution caused by the factory.

          Two of the factory's six furnaces were shut down as of 2002. The last batch of 6,000 coal gas users switched to natural gas on July 4 this year. The rest of the coal gas stored in the factory's reserves will go to a nearby thermo-power generation plant.

          The improvement in Beijing's environment from the relocation of the factory will be apparent - cutting down the burning of 2.96 million tons of coal and 4.3 billion cubic meters of exhaust emissions.

          "The factory was set up to meet environmental needs, and production was halted for the environment too," a factory official said.
          Page: 123

           
           

          主站蜘蛛池模板: 九九re线精品视频在线观看视频 | 亚洲av第一区二区三区| 国产成人精品无码一区二区老年人| 日本高清一区免费中文视频| 天堂女人av一区二区| 国产仑乱无码内谢| 亚洲一码二码三码精华液| 国产精品粉嫩嫩在线观看| 欧美人与动zozo| 亚洲国产一区二区三区最新| 日韩久久久久久中文人妻| 午夜精品久久久久久久第一页| 久久午夜无码鲁丝片直播午夜精品| 国产精品视频午夜福利| 亚洲一区二区美女av| 色噜噜狠狠成人综合| 亚洲精品自拍在线视频| 久久人人爽人人爽人人av| 亚洲成A人片在线观看无码不卡| V一区无码内射国产| 麻豆精品新a v视频中文字幕| 少妇高潮水多太爽了动态图| 国产伦久视频免费观看视频| 四虎国产精品永久在线| 尹人香蕉久久99天天拍| 欧美成本人视频免费播放| 日本一区二区三区精品视频| 天堂av最新版中文在线| 亚洲一区二区三区成人网站| 午夜福利免费视频一区二区| 精品尤物TV福利院在线网站| 人人妻人人澡人人爽人人精品av| 亚洲精品久久久久久下一站| 成人午夜视频在线| 高潮毛片无遮挡高清视频播放| 一级毛片网| 欧美性猛交xxxx富婆| 国内自拍小视频在线看| 国产AV巨作丝袜秘书| 2020国产成人精品视频| av中文字幕国产精品|